Answer :

Sure, let's solve this problem step-by-step.

1. Identify the known quantities:
- You have [tex]$40 in cash. - You are purchasing 7 gallons of gasoline. - The cost per gallon of gasoline is $[/tex]3.50.

2. Calculate the total cost of the gasoline:
- Multiply the number of gallons by the price per gallon.
- [tex]\( \text{Total Cost} = 7 \text{ gallons} \times \$3.50 \text{ per gallon} \)[/tex]

Calculate the multiplication:
- [tex]\( 7 \times 3.50 = 24.50 \)[/tex]

So, the total cost of the gasoline is [tex]$24.50. 3. Calculate the change received: - Subtract the total cost of the gasoline from the cash you have. - \( \text{Change Received} = \$[/tex]40.00 - \[tex]$24.50 \) Subtract the values: - \( 40.00 - 24.50 = 15.50 \) So, the change you should receive is $[/tex]15.50.

4. Conclusion:
- The total cost of purchasing 7 gallons of gasoline is [tex]$24.50. - With $[/tex]40.00 in cash, you will receive [tex]$15.50 in change. Thus, you should receive $[/tex]15.50 in change.